Bonnie Galbraith: [while standing right next to the slime people's wall] Where's the wall, Daddy? Prof. Galbraith: Right there, dear!

Tom Gregory: I'm a newscaster, sports mostly.

Movie Trivia:

The producers originally planned to have creatures called voles in the film as well as the slime people. The voles would have been wolf-like animals from underground that had been domesticated by the slime people, but the were left out of the final script.

The scenes of devastation supposedly caused by the fight with the slime people (shown briefly while the group is driving away from the airport) is actually footage of the Hollywood hills shortly after a wildfire swept through the area.

The scenes in the butcher shop and freezer were filmed in an actual butcher shop owned by the father-in-law of actor 'Robert Hutton' in Lancaster, California.

The two bums who appear in the theater are played by Joseph F. Robertson and Edward Finch Abrams, the film's producer and associate producer, respectively.

Blair Robertson, who was one of the scriptwriters, plays Mrs. Steel in the TV news footage.